Small, controlled fires have long been a seasonal occurrence in Bolivia. They are routinely used as a tool to maintain pastures, burn off spent crops, clear brush and forest, fertilize soil, and burn trash. But the fires in 2020—like those in 2019—have been anything but routine. They have prompted the government to declare a state of emergency.
Rather than remaining small and burning for short periods, fires this year have escaped and burned unchecked in several ecosystems, including the Pantanal wetlands in the eastern part of the country; the dry Chiquitano forest in the southeast; and Beni savanna and Amazon rainforest areas in the north. Satellites have observed fires burning throughout August, September, and October, charring large areas and emitting a pall of smoke that has often darkened skies over the region.
The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite acquired these natural-color images showing smoke streaming from fires in the Chiquitano forest of eastern Bolivia from October 7 to 10, 2020. The red dots are active fire detections—locations where the Visible Infrared Imaging Radiometer Suite (VIIRS) detected unusually warm temperatures associated with fires. The image below shows the smoke plumes on just October 9.
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Image via NASA Earth Observatory